Knee osteoarthritis is the most common joint disease, and the older you get, the higher the prevalence. Studies show that the prevalence of knee osteoarthritis in people over 60 years old is 50%, and over 75 years old, the prevalence is as high as 80%. More than 90% of patients with knee osteoarthritis go to the hospital only when they are in severe pain, and some patients take as long as two years from the onset of pain to diagnosis. Osteoarthritis is now the second leading cause of disability in adults. Causes of knee osteoarthritis Knee osteoarthritis is usually caused by degenerative knee joint disease, trauma, overwork and other factors. Knee arthritis is most common in middle-aged and elderly people and is the main cause of leg pain in the elderly. In addition, overweight, incorrect walking posture, prolonged squatting, and cold and chilling of the knee joint are also causes of knee arthritis. What are the dangers of knee arthritis 1, knee pain: knee arthritis can be manifested in the early stage of the activity of pain, walking for a long time, physical labor, going up and down the stairs, squatting and standing up when the pain is obvious, after resting pain can be reduced. By the time the disease develops to a certain extent, there may be pain once on the ground, and even pain when resting. This seriously limits the normal life and labor of patients and affects their quality of life. 2.Knee joint deformity: in the middle and late stages of joint lesions, due to the long-term pathological process of the joint bone, force line, joint space and the surrounding soft tissues have undergone structural changes, common knee deformities are: knee flexion contracture, internal and external deformity, knee subluxation and so on. At this time, the knee joint has partially or completely lost the function of activity, and the joint deformity directly affects the appearance and gait. 3.Psychological disorder: Knee pain, functional limitation and joint deformity will not only bring great harm to the patient’s body, but also bring strong pressure to the patient’s heart. When patients can not walk and stand like normal people, they can not carry out normal work and life, and even need to be taken care of by their family members, which will make them feel low self-esteem, irritable and depressed, and even lose confidence in life. 4, limited knee activities: early due to knee pain, patients do not dare to move or do not want to move, knee joints for a long time in a relatively comfortable position of flexion and extension; with the progression of the disease, the soft tissues around the joints adhesion, contracture, the patient endured the pain activities, but also can not reach the normal range of activities; worse, the knee joints are fixed in a certain position for a long time, the formation of the joints stiffness until the joints of the osseous fusion. How to prevent knee arthritis? Like to wear high-heeled shoes for women, because the knee joint pressure is too heavy, long-term, there will be degenerative knee osteoarthritis, it is recommended that women who love the beauty of less to wear as a good thing, have to wear, should avoid squatting and kneeling or climbing stairs action. Secondly, first of all, to control weight, obesity not only induces other systemic diseases, at the same time make the body joints involved, accelerate the wear and tear of the soft tissues between the joints triggered osteoarthritis. To participate in appropriate physical exercise, strong muscles and bones, but to avoid excessive exercise caused by joint damage. In addition, when sitting for a long time, pay attention to the posture, office workers should often change posture to avoid a certain part of the joints in a long-term weight-bearing state. To pay attention to moderate exercise and reasonable diet, usually also pay attention to prevent trauma, do not prolonged bowing and stooping; to prevent excessive fatigue, to avoid the joints to undergo long-term pressure; to change the excessive consumption of alcohol and other lifestyle habits. If you have knee osteoarthritis, pay attention to the following measures to slow down the development of the disease: cold and wet autumn and winter seasons, the patient should pay attention to keep warm, especially in the key areas wrapped with knee pads or cotton cloth, do not let the affected area in contact with the cool wind; less steep stairs, less downhill; usually avoid mechanical injuries, knee joints should be avoided to avoid the involvement of running and ball and other strenuous physical activity; on the bad posture, such as flat feet, knee Bad postures, such as flat feet, knee valgus, hunchback and scoliosis, should be corrected as much as possible.